Added AutoMLExperimentExtension to enable AutoML methods on gridsearch

Author: jordi1215

src/Microsoft.ML.Fairlearn/AutoML/AutoMLExperimentExtension.cs

@@ -0,0 +1,24 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.ML.AutoML;
+using Microsoft.ML.Fairlearn.reductions;
+
+namespace Microsoft.ML.Fairlearn.AutoML
+{
+    public static class AutoMLExperimentExtension
+    {
+        public static AutoMLExperiment SetBinaryClassificationMoment(this AutoMLExperiment experiment, ClassificationMoment moment)
+        {
+            experiment.ServiceCollection.AddSingleton(moment);
+            experiment.SetTunerFactory<CostFrugalWithLambdaTunerFactory>();
+
+            return experiment;
+        }
+    }
+}